Dear Vanessa,
I think a workhololic is, in most cases, a perfectionist. Basically, a perfectionist tends to become a workoholic, mainly, to be accepted, to be recognized, to be famous. A perfectionist worth is totally dependent on others (even though she might think all what she is doing comes from her will to not deliver anything different from perfection and that she doesn’t care that much about what others think). A perfectionist also tends to be a workoholic since she can’t trust others and is, consequently, unable to delegate and become a real leader. The sad truth about a perfectionist is that she is the best candidate for being in the “bad" comfort zone; obviously because she is always willing to be excellent in everything (she wants to be an astronaut, a lawyer, a nurse, a teacher, a musician, an archeologist, an inventor, a humanitarian militant, and the list goes on); which means she doesn’t really know who she is and what really matters. I know all of this because I am a “Recovering Perfectionist” ☺